for analysis. Since peak Aquarium activity will occur on a Saturday afternoon In 

 August, this was chosen as one critical period. A weekday afternoon In August was 

 chosen as the other critical time for analysis, because this Is when the balance 

 of activity In the Navy Yard will create peak traffic flows and the surrounding 

 highway network will also be at peak condition. A typical Wednesday In August was 

 chosen to represent the critical weekday condition. 



2. Background Travel Forecasts 



The key element In forecasting background travel relates to the level of travel 

 generated by other development In the Charlestown Navy Yard. At the present time 

 the Navy Yard contains approximately 800,000 square feet of office space and Just 

 under 700 residential units. Most of the remaining available development parcels 

 are located at the eastern end of the Yard, In the area known as "Yard's End". 

 Traffic Impacts have played an Important role In assessing the level of development 

 that can be accommodated on these remaining parcels. The Boston Redevelopment 

 Authority has recently proposed a less Intensive build-out than previously 

 suggested, which was detailed In a report distributed on May 10, 1988. This 

 latest level of development Is summarized In Table 5. 



TABLE 5 



PROPOSED CHARLESTOWN NAVY YARD 

 BUILD-OUT DEVELOPMENT 



Traditional Office 



Office/Medical Research 



Local Retal I 



Exhibit/Museum 



Hotel 



Resident la I 



CI Inlc/Medlcal Facility 50,000 Square Feet 



A recent analysis conducted for the Boston Redevelopment Authority Indicated 

 that between 3,600 and 4,300 parking spaces would be needed In the Navy Yard, with 

 the range depending on the extent to which Joint use of spaces between residents 

 and employees can be Implemented. This same analysis Indicates that the exit from 

 Gate 5 to Chelsea Street must be widened to two outbound lanes to accommodate 

 traffic levels associated with the expanded parking supply. 



In addition to development In the Navy Yard Itself, the Tudor Wharf site 

 adjacent to the Charlestown Bridge was assumed to be redeveloped as per the pie 

 Included In the recently filed Draft Environmental Report. For purposes of t 

 analysis the larger Option #2, Including the MassPort parcel was used. 



"Transportation Analysis for Charlestown Navy Yard", TAMS Consultants, 

 Inc. , July 28, 1988. 



"Tudor Wharf Draft Environmental Impact Report", EOEA #6744, September 

 1988, Fort Point Associates. 



17 



